using namespace std;
#include <iostream>
#include<unistd.h>
enum weekday
{
    MON=1,
    TUE,
    WED,
    THU=10,
    FRI,
    SAT=30,
    SUN
} day;
int main()
{
    day=MON;
    cout<<day<<endl;
    day=SAT;
    cout<<day<<endl;
    day=SUN;
    cout<<day<<endl;
    return 0;
}